Plant Data Sheet
Mountain Hemlock, Tsuga mertensiana
Along the Crest of the Cascades.
Loose coarse textured, well-drained acidic soils.
Plant strategy type/successional stage.
Tolerates sites with long lasting snow pack. Not drought/shade tolerant. Minor climax species.
Abies amabilis, Chaecyparis nootkatensis, Vaccinium membranaceum, Abies Lasiocarpa, Picea engelmanii, Pinus contorta
May be collected as:
Collection restrictions or guidelines
Seeds shed in Late November and December.
Cold stratification of mature seeds shortens incubation time and may substantially increase germination.
Seed viability ranges from 36-76% over a 2 yr period.
Recommended seed storage conditions
In a cooler (cold stratification).
Easily propagated by seeds and cuttings
Soil or medium requirements
Snow, mineral soil
Recommended planting density
2-3 m apart
Care requirements after installed
Water weekly, then no water after 2 months.
Normal rate of growth or spread; lifespan
Very slow growing. 7-28m tall at 100 yrs. Life span 800+ yrs.
Andy; Pojar, Jim. Plants of the
Silvics of NA, VI Conifers. Burns, Russel M. & Honkala, Barbara H. Technical Coordinators. FS. USDA.WADC. Dec 1990.
Data compiled by
Christer Lundstrom –